WO2018059507A1 - 通信方法与设备 - Google Patents

通信方法与设备 Download PDF

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Publication number
WO2018059507A1
WO2018059507A1 PCT/CN2017/104064 CN2017104064W WO2018059507A1 WO 2018059507 A1 WO2018059507 A1 WO 2018059507A1 CN 2017104064 W CN2017104064 W CN 2017104064W WO 2018059507 A1 WO2018059507 A1 WO 2018059507A1
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WO
WIPO (PCT)
Prior art keywords
frequency band
mhz
type
frame
service
Prior art date
Application number
PCT/CN2017/104064
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
刘亚林
张军
钱湘江
孙军平
胡亨捷
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP17854957.2A priority Critical patent/EP3512254B1/de
Publication of WO2018059507A1 publication Critical patent/WO2018059507A1/zh
Priority to US16/368,664 priority patent/US10834016B2/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/302—Route determination based on requested QoS
    • H04L45/306—Route determination based on the nature of the carried application
    • H04L45/3065—Route determination based on the nature of the carried application for real time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/76—Admission control; Resource allocation using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority

Definitions

  • the present application relates to the field of communications and, more particularly, to a communication method and apparatus.
  • the power system is composed of a power network for transmitting electricity and a communication network for transmitting information.
  • the distribution communication network refers to the communication system for transmitting information between the distribution terminal and the main station system, and is mainly used for monitoring and control of the distribution system, including the distribution automation service and the online monitoring service of the distribution network, wherein the distribution automation
  • the service has high requirements on communication reliability, quality of service (QoS), and transmission delay.
  • QoS quality of service
  • the online monitoring service of the distribution network has low QoS requirements for communication and is not very sensitive to delay.
  • the frame format supported in the power transmission system is: the subframe length is 5 ms, and one frame includes 5 subframes.
  • the frame length of the frame format is short, which causes the uplink and downlink to be too frequent, and the system overhead is too large.
  • the uplink and downlink switching overhead accounts for 20% of the total communication time.
  • This kind of frame format is advantageous for the distribution automation service (instant-sensitive service), but for the online monitoring service of the distribution network (immediate delay-sensitive service), too much system overhead is not necessary.
  • the present application provides a communication method and device, which can support different types of services through different frame structures, so as to meet the transmission requirements of different types of services.
  • a communication method includes: determining a first frequency band and a second frequency band in a working frequency band; transmitting a first type of frame on the first frequency band, and transmitting on the second frequency band a second type of frame, the first type of frame is used to carry the first type of service, the second type of frame is used to carry the second type of service, and the second type of frame is different from the frame structure of the first type of frame .
  • the sensitivity of the first type of service to the transmission delay is higher than the sensitivity of the second type of service to the transmission delay, where The frame length of a type of frame is smaller than the frame length of the second type of frame.
  • the frame length of the first type of frame is smaller than the frame length of the second type of frame, and the first type of frame can obtain a shorter uplink and downlink switching period than the second type of frame, and the transmission delay is small, thereby being applicable.
  • the second type of frames have longer switching cycles than the first-class frames, and the system overhead is small, which is suitable for delay-insensitive services (such as power distribution). Online monitoring business of the power grid). Therefore, the present application can meet different transmission requirements of different types of services by using different frame structures in different frequency bands of the working frequency band and carrying different services through different frame structures.
  • the first type of frame includes 5 subframes, each subframe has a length of 4 ms, and each subframe includes 5 orthogonal frequency division multiplexing OFDM symbols;
  • the second type of frame includes 15 subframes, each subframe has a length of 8 ms, and each subframe includes 10 OFDM symbols;
  • the first frequency band and the second frequency band The OFDM subcarrier width of the frequency band is 25/16 KHz.
  • the frame length of the first type of frame transmitted on the first frequency band is shorter, so as to obtain a shorter uplink and downlink switching period, thereby meeting the low delay requirement of the delay sensitive type service;
  • the second type of frame has a longer frame length to avoid frequent uplink and downlink handovers, which can reduce performance overhead and is suitable for delay-insensitive services. Therefore, the communication method provided by the present application can simultaneously satisfy the requirements of different types of services.
  • the first sub-band and the second frequency band adopt the same sub-carrier spacing, which can reduce the difficulty of system implementation.
  • the first type of frame includes 5 subframes, each subframe has a duration of 4 ms, and each subframe includes 10 OFDM symbols;
  • the second type of frame includes 15 subframes, each subframe has a duration of 8 ms, each subframe includes 10 OFDM symbols;
  • the OFDM subcarrier width of the first frequency band is 25/8 kHz, the first The OFDM subcarrier width of the two bands is 25/16 KHz.
  • the working frequency band includes a frequency band licensed to the power system.
  • the first type of service is an electric power distribution automation service
  • the second type of service is an online monitoring service of a power distribution network.
  • the working frequency band includes a frequency band licensed to the power system in a 230 MHz frequency band.
  • the determining the first frequency band and the second frequency band in the working frequency band including: in the 230 MHz frequency band 223.525 MHz - 224.650 MHz and 230.525 MHz - 231.650 MHz are determined as the first frequency band; 228.075 MHz - 228.750 MHz in the 230 MHz frequency band is determined as the second frequency band.
  • the two largest clusters are determined as the first frequency band according to three clusters (223.525 MHz - 224.650 MHz, 230.525 MHz - 231.650 MHz, and 228.075 MHz - 228.750 MHz) licensed to the power system in the 230 MHz band.
  • the other cluster is determined to be the second frequency band, thereby facilitating the large bandwidth requirement of the delay sensitive type service.
  • the determining the first frequency band and the second frequency band in the working frequency band including: in the 230 MHz frequency band 228.075 MHz-228.750 MHz and 230.525 MHz-231.650 MHz are determined as the first frequency band; 222.525 MHz-224.650 MHz in the 230 MHz frequency band is determined as the second frequency band.
  • two clusters with similar distances are divided into first according to three clusters (223.525MHz-224.650MHz, 230.525MHz-231.650MHz and 228.075MHz-228.750MHz) of the frequency band licensed to the power system in the 230MHz frequency band.
  • another cluster is determined as the second frequency band, which is beneficial to meet the large bandwidth requirement of the delay-sensitive service, and on the other hand, because the distance between the first frequency band and the second frequency band is far, Avoid interference between the first frequency band and the second frequency band, thereby facilitating simultaneous satisfaction of different types of services Demand.
  • the determining the first frequency band and the second frequency band in the working frequency band include: when the first type of service When the first service requirement is met, the frequency band authorized to the power system in the 230 MHz frequency band is determined as the first frequency band, and the second frequency band is set to 0; when the first type of service has the second service When required, 228.075 MHz-228.750 MHz and 230.525 MHz-231.650 MHz in the 230 MHz frequency band are determined as the first frequency band, and 222.525 MHz-224.650 MHz in the 230 MHz frequency band is determined as the second frequency band.
  • the working frequency band further includes a frequency band licensed to the power system in a 1.8 GHz frequency band;
  • the first frequency band and the second frequency band include: determining a frequency band authorized to the power system in the 1.8 GHz frequency band as the first frequency band; determining a frequency band authorized to the power system in the 230 MHz frequency band as the second frequency band .
  • the first type of frame includes indication information for indicating a range of the first frequency band.
  • the communication method further includes: sending a broadcast message, where the broadcast message includes indication information, where the indication information is used by And indicating a range of the first frequency band and/or the second frequency band.
  • a second aspect provides a communication device for performing the method of the first aspect or any one of the possible implementations of the first aspect.
  • the communication device may comprise means for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a third aspect provides a communication device including a memory and a processor for storing instructions for executing instructions stored by the memory, and performing execution of the instructions stored in the memory such that the processing The method of the first aspect or any one of the possible implementations of the first aspect is performed.
  • FIG. 1 shows a schematic flow chart of a communication method according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing the operating frequency band in the embodiment of the present invention.
  • FIG. 3 is a schematic diagram showing dividing a first frequency band and a second frequency band in an embodiment of the present invention.
  • FIG. 4 shows another schematic diagram of dividing a first frequency band and a second frequency band in an embodiment of the present invention.
  • FIG. 5 shows still another schematic diagram of dividing the first frequency band and the second frequency band in the embodiment of the present invention.
  • FIG. 6 shows still another schematic diagram of dividing the first frequency band and the second frequency band in the embodiment of the present invention.
  • FIG. 7 shows a schematic block diagram of a communication device of an embodiment of the present invention.
  • FIG. 8 shows another schematic block diagram of a communication device according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a communication method 100 according to an embodiment of the present invention.
  • the communication method 100 may be performed by The base station performs, and the communication method 100 includes:
  • the first type of frame is transmitted on the first frequency band
  • the second type of frame is transmitted on the second frequency band.
  • the first type of frame is used to carry the first type of service
  • the second type of frame is used to carry the second type of service
  • the second type of frame is used to carry the second type of service.
  • the class frame is different from the frame structure of the first type of frame.
  • the frame structure of the second type of frame is different from the frame structure of the first type of frame, that is, the frame length of the second type of frame is different from the frame type of the first type of frame, or the second type of frame is different from the length of the first type of frame.
  • the second type of frame is different from the number of orthogonal frequency division multiplexing (OFDM) symbols included in the first type of frame.
  • OFDM orthogonal frequency division multiplexing
  • the first type of frame may be sent on the first frequency band
  • the second type of frame may be sent on the second frequency band.
  • the second type of frame may be sent at the same time, or may have a certain time difference. Not limited.
  • the first type of frame may be received on the first frequency band
  • the second type of frame may be received on the second frequency band, and may be received at the same time or may have a certain time difference. Not limited.
  • the sensitivity of the first type of service to the transmission delay is higher than the sensitivity of the second type of service to the transmission delay, and the frame length of the first type of frame. Less than the frame length of the second type of frame.
  • the first type of service is a delay-sensitive service in the power system, such as an electric power distribution automation service
  • the second type of service is a service that is not sensitive to delay in the power system, such as an online monitoring service of the power distribution network.
  • both the first type of frame and the second type of frame work in a Time Division Duplex (TDD) mode, wherein the first type of frame is shorter than the second type of frame, thereby obtaining a shorter
  • TDD Time Division Duplex
  • the first type of service instant delay sensitive service
  • the second type of service is carried on the second type of frame.
  • LTE Long Term Evolution
  • FDD Frequency Division Dual
  • TDD Frequency Division Dual
  • the respective frame structure but in the same system (such as FDD or TDD), the frame structure is the same.
  • a control channel and a data channel are designed in one system, but the control channel is identical to the frame structure on the data channel.
  • the embodiment of the present invention by dividing the working frequency band into the first frequency band and the second frequency band, by using different frame structures on the first frequency band and the second frequency band, and carrying different services through different frame structures, Meet the transmission needs of different types of services.
  • the embodiment of the present invention can meet the transmission requirements of the delay-sensitive service and the delay-insensitive service at the same time with a small system overhead.
  • the delay-sensitive service and the delay-insensitive service mentioned in the embodiments of the present invention are relative concepts, for example, the delay requirement indicator of the first service is 10 ms, and the delay requirement indicator of the second service is required. If the delay requirement indicator of the third service is 1 s, the second service is a delay-insensitive service with respect to the first service, but the second service is delayed-sensitive with respect to the third service.
  • the first type of frame includes 5 subframes, each subframe has a length of 4 ms, and each subframe includes 5 orthogonal frequency division multiplexing OFDM symbols.
  • the second type of frame includes 15 subframes, each subframe has a length of 8 ms, and each subframe includes 10 OFDM symbols; the first frequency band and the second frequency band of OFDM
  • the subcarrier width is 25/16KHz.
  • each OFDM subcarrier width is 25/16 KHz.
  • the frame length of the first type of frame transmitted on the first frequency band is shorter, so as to obtain a shorter uplink and downlink switching period, thereby meeting the low delay requirement of the delay sensitive service;
  • the second frame of the transmitted frame has a long frame length to avoid frequent uplink and downlink handover, which can improve transmission efficiency and reduce system overhead, and is suitable for delay-insensitive services. Therefore, the communication method provided by the embodiment of the present invention can better meet the requirements of different types of services at the same time.
  • the first sub-band and the second frequency band adopt the same sub-carrier spacing, which can reduce the difficulty of system implementation.
  • the first type of frame includes 5 subframes, each subframe has a duration of 4 ms, each subframe includes 10 OFDM symbols, and the second type of frame includes 15
  • Each sub-frame has a duration of 8 ms, and each sub-frame includes 10 OFDM symbols;
  • the OFDM sub-carrier width of the first frequency band is 25/8 kHz, and the OFDM sub-carrier width of the second frequency band is 25/16 KHz.
  • each OFDM subcarrier width in the first frequency band is greater than each OFDM subcarrier width in the second frequency band, and correspondingly, the corresponding OFDM symbol length on the first frequency band is smaller than the corresponding OFDM symbol length on the second frequency band,
  • the delay of the first type of frame transmitted on the first frequency band is smaller, and the delay of the second type of frame transmitted on the second frequency band is larger. Therefore, carrying the first type of service on the first type of frame is beneficial to satisfy Delay-sensitive business requires less time delay.
  • the width of each OFDM subcarrier of the second frequency band is smaller than the width of each OFDM subcarrier of the first frequency band.
  • the narrower subcarriers can be transmitted further within the same OFDM symbol.
  • the distance between the second frequency band and the first frequency band is larger, and the cell can also support more users at the same time. Therefore, the second type of service is carried in the second frame, and the delay-insensitive service can be satisfied. Wide coverage needs.
  • the operating frequency band includes a frequency band licensed to the power system.
  • the frequency band licensed to the power system is recorded as a power-dedicated frequency band.
  • the first type of service is a distribution automation service, and such a service has high requirements for delay
  • the second type of service is an online monitoring service of a distribution network, and such a service is delayed.
  • the requirements are not very high.
  • two frame formats are simultaneously supported in the power dedicated frequency band to meet the service transmission requirement of the power system, and specifically, in the power dedicated frequency band, the power distribution can be simultaneously satisfied.
  • the transmission requirements of the automation business and the transmission requirements of the online monitoring service of the distribution network are simultaneously satisfied.
  • the working frequency band includes a frequency band licensed to the power system in the 230 MHz frequency band.
  • the 230 MHz frequency band ranges from 223.525 MHz to 231.650 MHz, and the 230 MHz frequency band is allocated as a frequency point with a bandwidth of 25 kHz, for a total of 480 frequency points.
  • the 480 frequency points in the 230 MHz frequency band 40 frequency points are divided into power-specific frequency points, and the 40 power-specific frequency points (total 1 MHz) are dispersed in the 480 frequency points.
  • 40 power-specific frequency points are shown in Table 1 and Table 2.
  • the frequency bands licensed to the power system in the 230 MHz band are roughly divided into three clusters: 223.525 MHz - 224.650 MHz, 228.075 MHz - 228.750 MHz, and 230.525 MHz - 231.650 MHz.
  • 110 determines the first frequency band in the working frequency band and
  • the second frequency band includes:
  • the 222.525 MHz-224.650 MHz and 230.525 MHz-231.650 MHz in the 230 MHz band are determined as the first frequency band; and the 228.075 MHz-228.750 MHz in the 230 MHz frequency band is determined as the second frequency band.
  • the first frequency band is the frequency band shown in "Part 1" in FIG. 3
  • the second frequency band is the frequency band shown in "Part 2" in FIG.
  • the first type of frame transmitted on the first frequency band may have the frame structure of the first type of frame described in the foregoing embodiment
  • the second type of frame transmitted on the second frequency band may be The frame structure of the second type of frame described in the foregoing embodiment is not described herein for brevity.
  • the two largest clusters are determined as the first according to three clusters (223.525 MHz-224.650 MHz, 230.525 MHz-231.650 MHz, and 228.075 MHz-228.750 MHz) of the frequency band licensed to the power system in the 230 MHz frequency band.
  • another cluster is determined as the second frequency band, thereby facilitating the large bandwidth requirement of the delay sensitive service.
  • 110 determines the first frequency band and the second frequency band in the working frequency band, including:
  • 228.075MHz-228.750MHz and 230.525MHz-231.650MHz in the 230MHz frequency band are determined as the first frequency band;
  • the 222.525 MHz-224.650 MHz in the 230 MHz band is determined as the second frequency band.
  • the first frequency band is the frequency band shown in "Part 1" in FIG. 4
  • the second frequency band is the frequency band shown in "Part 2" in FIG.
  • the first type of frame transmitted on the first frequency band may have the frame structure of the first type of frame described in the foregoing embodiment
  • the second type of frame transmitted on the second frequency band may be The frame structure of the second type of frame described in the foregoing embodiment is not described herein for brevity.
  • the delay-sensitive service will be transmitted at 1.8 GHz, and the idle 230 MHz band will be used for delay-insensitive services.
  • the working frequency band includes a frequency band licensed to the power system in the 230 MHz frequency band and a frequency band authorized to the power system in the 1.8 GHz frequency band;
  • the frequency band licensed to the power system in the 230 MHz band is determined as the second frequency band.
  • the first frequency band and the second frequency band may be dynamically determined.
  • the frequency band granted to the power system in the 230 MHz frequency band is determined as the first frequency band, and the second frequency band is set to 0;
  • the service has the second service demand, it will be 228.075MHz-228.750MHz and 230.525MHz-231.650MHz in the 230MHz band.
  • the first frequency band is determined, and 223.525 MHz-224.650 MHz in the 230 MHz frequency band is determined as the second frequency band.
  • the part shown by the solid line in FIG. 5 and the part 1 indicated by the broken line are determined as the first frequency band, that is, on the 230 MHz frequency band. All power licensed frequency bands are used as the first frequency band, and the second frequency band ranges from zero.
  • the "part 1" shown by the solid line in FIG. 5 is determined as the first frequency band
  • the "part 2" shown by the broken line in FIG. 5 is determined as the second frequency band.
  • the first service requirement in the embodiment is, for example, a service requirement exceeding a threshold
  • the second service requirement is a service requirement that does not exceed a threshold, wherein the threshold may be preset by the system.
  • the method provided by the embodiment shown in FIG. 5 can be referred to as a communication method of scalable bandwidth, which can improve spectrum utilization.
  • FIG. 5 is merely an example and not a limitation.
  • the range of the first frequency band and the second frequency band can be dynamically adjusted according to the service requirements of the first type of service, and is not limited to the method shown in FIG.
  • the first frequency band and the second frequency band are determined according to the embodiment shown in FIG. 3; and the second service requirement of the first type of service is determined according to the embodiment shown in FIG. The first frequency band and the second frequency band.
  • 228.075 MHz-228.750 MHz and 230.525 MHz-231.650 MHz in the 230 MHz band are determined as the first frequency band, and 223.525 MHz-224.650 MHz in the 230 MHz frequency band.
  • the "part 1" shown by the solid line in FIG. 6 is determined as the first frequency band, which is shown by the solid line in FIG. "Part 2" is determined to be the second frequency band.
  • the "part 2" shown by the solid line in FIG. 6 and the “part 2" shown by the broken line are both determined as the second frequency band, and the 1.8 GHz band is authorized to the power system.
  • the frequency band is determined to be the first frequency band.
  • the first frequency band and the second frequency band are dynamically adjusted according to the acquisition of the spectrum resources, thereby providing a suitable spectrum resource for the delay sensitive service.
  • FIG. 6 is only an example and is not limited. In an actual application, the first frequency band and the second frequency band may be adjusted as appropriate according to specific situations, which is not limited by the embodiment of the present invention.
  • the range of the first frequency band and/or the second frequency band may be indicated in a broadcast manner or in a form in which the indication information is carried in the frame.
  • the first type of frame includes indication information indicating a range of the first frequency band.
  • the indication information is the first identifier (for example, 1), indicating that the first frequency band is 223.525 MHz-224.650 MHz (hereinafter referred to as the first cluster) and 230.525 MHz-231.650 MHz in the 230 MHz frequency band (hereinafter referred to as the first
  • the indication information is the second identifier (for example, 2), indicating that the first frequency band is 228.075 MHz-228.750 MHz (hereinafter referred to as the second cluster) and the third cluster
  • the indication information is the third identifier ( For example, when 3), indicating that the first frequency band is the first cluster and the second cluster
  • the indication information is the fourth identifier (for example, 4), indicating that the first frequency band is all power licensed frequency bands in the 230 MHz frequency band (ie, the first cluster) And the second cluster and the third cluster);
  • the indication information is the fifth identifier (for example, 5), indicating that the first frequency band is a frequency band licensed to the power system in the first
  • the second type of frame may also include indication information for indicating a range of the second frequency band.
  • the communications method further includes:
  • a broadcast message is sent, the broadcast message including indication information for indicating a range of the first frequency band and/or the second frequency band.
  • the indication information is the first identifier (for example, 1), indicating that the first frequency band is the first cluster and the third cluster, and the second frequency band is the second cluster; and when the indication information is the second identifier (for example, 2), indicating that the first frequency band is the second cluster and the third cluster, and the second frequency band is the first cluster; when the indication information is the third identifier (for example, 3), indicating that the first frequency band is the first cluster and the second cluster The cluster, the second frequency band is the third cluster; when the indication information is the fourth identifier (for example, 4), indicating that the first frequency band is all the power licensed frequency bands in the 230 MHz frequency band, and the second frequency band ranges from 0; When it is the fifth identifier (for example, 5), it indicates that the first frequency band is a frequency band licensed to the power system in the 1.8 GHz frequency band, and the second frequency band is a frequency band authorized to the power system in the 230 MHz frequency band.
  • the fifth identifier for example, 5
  • the application scenario of the embodiment of the present invention is described as an example of the power system, and the embodiment of the present invention is not limited thereto.
  • the communication method provided by the embodiment of the present invention can also be applied to other communication scenarios of different services in which different delay requirements are required in the same system.
  • the executor of the above embodiment may be any communication device.
  • the steps in the embodiment shown in FIG. 1 may be performed by the sending device or may be performed by the receiving device.
  • the communication method of the embodiment of the present invention is described above with reference to FIG. 1 to FIG. 6.
  • the communication device of the embodiment of the present invention will be described below with reference to FIG. 7 and FIG.
  • FIG. 7 shows a schematic block diagram of a communication device 200 according to an embodiment of the present invention.
  • the communication device 200 includes:
  • a determining module 210 configured to determine a first frequency band and a second frequency band in the working frequency band
  • the transmitting module 220 is configured to transmit the first type of frame on the first frequency band determined by the determining module, and transmit the second type of frame in the second frequency band determined by the determining module, where the first type of frame is used to carry the first type of service, and the second type
  • the class frame is used to carry the second type of service, and the second type of frame is different from the frame structure of the first type of frame.
  • the sensitivity of the first type of service to the transmission delay is higher than the sensitivity of the second type of service to the transmission delay, and the frame length of the first type of frame is smaller than the frame length of the second type of frame.
  • the first type of frame includes 5 subframes, each subframe has a length of 4 ms, and each subframe includes 5 orthogonal frequency division multiplexing OFDM symbols; and the second type of frame includes 15 subframes.
  • Each subframe has a length of 8 ms, and each subframe includes 10 OFDM symbols; the OFDM subcarrier widths of the first frequency band and the second frequency band are both 25/16 KHz.
  • the first type of frame includes 5 subframes, each subframe has a duration of 4 ms, each subframe includes 10 OFDM symbols, and the second type of frame includes 15 subframes, and each subframe has a duration of 8ms, each subframe includes 10 OFDM symbols; the OFDM subcarrier width of the first frequency band is 25/8 kHz, and the OFDM subcarrier width of the second frequency band is 25/16 KHz.
  • the operating frequency band includes a frequency band that is licensed to the power system.
  • the operating frequency band includes a frequency band licensed to the power system in the 230 MHz frequency band.
  • the determining module 210 is configured to determine 223.525 MHz-224.650 MHz and 230.525 MHz-231.650 MHz in the 230 MHz frequency band as the first frequency band; and determine 228.075 MHz-228.750 MHz in the 230 MHz frequency band as the first Second frequency band.
  • the determining module 210 is configured to determine 228.075 MHz-228.750 MHz and 230.525 MHz-231.650 MHz in the 230 MHz frequency band as the first frequency band; and determine 223.525 MHz-224.650 MHz in the 230 MHz frequency band as the first Second frequency band.
  • the determining module 210 is configured to determine, when the first type of service has the first service requirement, the frequency band authorized to the power system in the 230 MHz frequency band as the first frequency band, and set the second frequency band. 0; when the first type of service has the second service requirement, the 228.075 MHz-228.750 MHz and the 230.525 MHz-231.650 MHz in the 230 MHz band are determined as the first frequency band, and the 223.525 MHz-224.650 MHz in the 230 MHz frequency band is determined as the first Second frequency band.
  • the working frequency band further includes a frequency band licensed to the power system in the 1.8 GHz frequency band; the determining module 210 is configured to determine a frequency band authorized to the power system in the 1.8 GHz frequency band as the first frequency band; The frequency band licensed to the power system is determined to be the second frequency band.
  • the first type of frame includes indication information for indicating a range of the first frequency band.
  • the transmission module 220 is further configured to send a broadcast message, where the broadcast message includes indication information, where the indication information is used to indicate a range of the first frequency band and/or the second frequency band.
  • the communication device 200 of the embodiments of the present invention may be used to perform the communication method of the above embodiments, and the above and other operations and/or functions of the respective modules in the communication device 200 are respectively implemented to implement the respective methods in FIGS. 1 to 6.
  • the corresponding process, for the sake of brevity, will not be described here.
  • determination module 210 can be performed by a processor or processor-related circuit component of the communication device 200, which can be executed by a transceiver or transceiver-related circuit component of the communication device 200.
  • an embodiment of the present invention further provides a network device 300, which includes a processor 310, a memory 320, a bus system 330, and a transceiver 340.
  • the processor 310, the memory 320 and the transceiver 340 are connected by a bus system 330 for storing instructions for executing instructions stored in the memory 320 to control the transceiver 340 to receive signals and/or Send a signal.
  • the processor 310 is configured to determine the first frequency band and the second frequency band in the working frequency band, and the transceiver 340 is configured to transmit the first type of frame in the first frequency band and transmit the second type of frame in the second frequency band.
  • the first type of frame is used to carry the first type of service
  • the second type of frame is used to carry the second type of service
  • the second type of frame is different from the frame structure of the first type of frame.
  • the sensitivity of the first type of service to the transmission delay is higher than the sensitivity of the second type of service to the transmission delay, and the frame length of the first type of frame is smaller than the frame length of the second type of frame.
  • the first type of frame includes 5 subframes, each subframe has a length of 4 ms, and each subframe includes 5 orthogonal frequency division multiplexing OFDM symbols; and the second type of frame includes 15 subframes.
  • Each subframe has a length of 8 ms, and each subframe includes 10 OFDM symbols; the OFDM subcarrier widths of the first frequency band and the second frequency band are both 25/16 KHz.
  • the first type of frame includes 5 subframes, each subframe has a duration of 4 ms, each subframe includes 10 OFDM symbols, and the second type of frame includes 15 subframes, and each subframe has a duration of 8ms, each subframe It includes 10 OFDM symbols; the OFDM subcarrier width of the first frequency band is 25/8 kHz, and the OFDM subcarrier width of the second frequency band is 25/16 KHz.
  • the operating frequency band includes a frequency band that is licensed to the power system.
  • the operating frequency band includes a frequency band licensed to the power system in the 230 MHz frequency band.
  • the processor 310 is configured to determine 223.525 MHz-224.650 MHz and 230.525 MHz-231.650 MHz in the 230 MHz frequency band as the first frequency band; and determine 228.075 MHz-228.750 MHz in the 230 MHz frequency band as the first Second frequency band.
  • the processor 310 is configured to determine 228.075 MHz-228.750 MHz and 230.525 MHz-231.650 MHz in the 230 MHz frequency band as the first frequency band; and determine 223.525 MHz-224.650 MHz in the 230 MHz frequency band as the first Second frequency band.
  • the processor 310 is configured to determine, when the first type of service has the first service requirement, the frequency band granted to the power system in the 230 MHz frequency band as the first frequency band, and set the second frequency band. 0; when the first type of service has the second service requirement, the 228.075 MHz-228.750 MHz and the 230.525 MHz-231.650 MHz in the 230 MHz band are determined as the first frequency band, and the 223.525 MHz-224.650 MHz in the 230 MHz frequency band is determined as the first Second frequency band.
  • the working frequency band further includes a frequency band licensed to the power system in the 1.8 GHz frequency band; the processor 310 is configured to determine a frequency band authorized to the power system in the 1.8 GHz frequency band as the first frequency band; The frequency band licensed to the power system is determined to be the second frequency band.
  • the first type of frame includes indication information for indicating a range of the first frequency band.
  • the transceiver 340 is configured to send a broadcast message, where the broadcast message includes indication information indicating information for indicating a range of the first frequency band and/or the second frequency band.
  • the processor 310 may be a central processing unit ("CPU"), and the processor 310 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 320 can include read only memory and random access memory and provides instructions and data to the processor 310. A portion of the memory 320 may also include a non-volatile random access memory. For example, the memory 320 can also store information of the device type.
  • the bus system 330 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 330 in the figure.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 310 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 320, and the processor 310 reads the information in the memory 320 and combines the hardware to perform the steps of the above method. To avoid repetition, it will not be described in detail here.
  • the transceiver 340 can indicate a device having a receive and transmit function, and can also include a separate receiver and a separate transmitter.
  • communication device 300 in accordance with embodiments of the present invention may be used to perform the method embodiments described above in connection with Figures 1 through 6, which may correspond to communication device 200 in accordance with an embodiment of the present invention, and that communicate
  • the foregoing and other operations and/or functions of the respective modules in the device 300 are respectively implemented in order to implement the respective processes of the respective methods in FIG. 1 to FIG. 6, and are not described herein again for brevity.
  • the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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CN106254038B (zh) 2020-02-14
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US20190222532A1 (en) 2019-07-18
EP3512254A4 (de) 2019-09-18
EP3512254A1 (de) 2019-07-17
CN106254038A (zh) 2016-12-21

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